The descending limb of the loop of Henle ________.
A) is not permeable to water
B) is freely permeable to sodium and urea
C) pulls water by osmosis into the lumen of the tubule
D) contains fluid that becomes more concentrated as it moves down into the medulla
D) contains fluid that becomes more concentrated as it moves down into the medulla
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The rate of gastric emptying depends entirely on the volume and fluidity of gastric contents
Indicate whether the statement is true or false
What three elements form the filtration membrane?
A) intraglomerular mesangial cells, afferent arteriole, and efferent arteriole B) visceral layer of the glomerular capsule, parietal layer of the glomerular capsule, and the macula densa C) macula densa, extraglomerular mesangial cells, juxtaglomerular cells D) glomerular capsule, fenestrated endothelium, and intraglomerular mesangial cells E) fenestrated endothelium, basement membrane, and foot processes of the podocyte
The "r" in rRNA stands for
A) regeneration. B) recurrence. C) rebuilding. D) ribosomal. E) radiation.
During a normal inspiration, air pressure in your alveoli (a.k.a., intrapulmonary pressure) is:
A. equal to atmospheric pressure B. equal to intrapleural pressure C. greater than atmospheric pressure D. less than atmospheric pressure E. + 3 mm Hg